ICI Paris Île-de-France

Based on the provided articles, it's impossible to provide a summary about ICI Paris Île-de-France. The articles focus on Céline Dion's concert pre-sale and the Paris Saint-Germain's congratulations to the new mayor of Paris, Emmanuel Grégoire, regarding negotiations for the Parc des Princes. There is no mention of ICI Paris Île-de-France or any connection to the events described. Therefore, I cannot determine their background, newsworthiness, recent events, or relevance based on the given information.